P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
IBHRE CCDS Exam
Questions & Answers 2026-
2027 | Updated Certification
Review
Verified Answers Exam Ready With Rationales
100 QUESTIONS
DOCUMENT OVERVIEW
This document contains 100 verified questions with correct answers provided, offering clear explanations
for each item. It focuses on the subject area of cardiac device therapy and electrophysiology, making it an
essential resource for students preparing for certification exams. Ideal for study and review, this guide
ensures a comprehensive understanding of key concepts to enhance exam readiness.
CONTENTS
Core Principles & Fundamentals Q1–Q25
Essential Concepts & Terms Q26–Q50
Clinical & Practical Applications Q51–Q75
Diagnostic & Assessment Methods Q76–Q100
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 100
Rheobase
CORRECT ANSWER
the lowest point on a strength duration curve at an infinitely long pulse duration
Q2 QUESTION 2 OF 100
Chronaxie time
CORRECT ANSWER
the pulse width at twice the rheobase value. It approximates the most efficient stimulation pulse duration
Q3 QUESTION 3 OF 100
Charge (formula)
CORRECT ANSWER
Charge= I(current) x T(time)
Page 2
, Q4 QUESTION 4 OF 100
Furman's formula
CORRECT ANSWER
Energy(microjoules)= I(current)xV(voltage)xT(pulse width)
Q5 QUESTION 5 OF 100
Ohms law formula
CORRECT ANSWER
Voltage(electromotive force)= I(current/flow of electrons) x R(resistance to current flow in ohms)
Q6 QUESTION 6 OF 100
Functional Refractory Period
CORRECT ANSWER
the coupling interval which first results in a measurable degree of delay in impulse conduction
Q7 QUESTION 7 OF 100
Effective Refractory Period
CORRECT ANSWER
the longest coupling interval to be associated with block
Q8 QUESTION 8 OF 100
Page 3